Can I renew my driver's license through 12123?

Why Does the Car's Water Temperature Gauge Not Rise in Winter?

In winter, if the car's water temperature gauge does not rise, it is likely due to a faulty thermostat or the radiator fan running continuously. When there is a circuit malfunction, the electric fan may run continuously. Additionally, a damaged silicone oil clutch can also cause the fan to run non-stop. These factors can prevent the water temperature from rising. The related explanations are as follows: 1. The thermostat in a car functions like a valve. It is typically installed at the outlet of the radiator, which is the inlet of the water pump. During operation, when the coolant temperature is low, the thermostat blocks the low-temperature coolant from the radiator, allowing the engine's water temperature to rise quickly. 2. When the engine's water temperature reaches a certain level, the valve gradually opens, and the coolant from the radiator starts circulating again. If the thermostat malfunctions and the valve fails to close in time, the coolant remains in a state of large circulation. Under such conditions, the engine's water temperature will not rise.

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How to Check for Brake Drag?

Hydraulic brake system brake drag diagnosis methods are as follows: 1. Lift the car and manually rotate the wheels without pressing the brake pedal. If a certain wheel cannot rotate, it indicates brake drag on that wheel; if all wheels cannot rotate, it indicates brake drag on all wheels. 2. If there is brake drag on an individual wheel, first loosen the bleeder screw of that wheel's brake cylinder. If brake fluid spurts out rapidly and the wheel can then rotate freely, it indicates a blockage in the brake line of that wheel, and the brake cylinder failed to return oil, which should be replaced promptly. If the wheel still cannot rotate, remove the wheel and disassemble it to inspect the brake. 3. If there is brake drag on all wheels, first check if the brake pedal free travel meets the requirements. If the free travel is too small, adjust it promptly; check the return condition of the brake pedal by pressing it firmly to the floor and quickly releasing it. If the pedal returns slowly, it indicates a failure in the brake pedal return spring, which should be replaced or repaired.

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Why Does Engine Oil Level Increase in Cars?

Oil level increase is primarily caused by incomplete combustion or coolant leakage. The specific reasons are as follows: 1. For example, clogged air filter; faulty fuel injector; damaged spark plug, cylinder misfire; cylinder wear, insufficient cylinder pressure; improperly closed valves; blown cylinder head gasket; sand holes or cracks in cylinder liner or cylinder head, etc. Unburned fuel or coolant entering the oil pan through the cylinder walls can lead to an increase in oil level. 2. The above issues can dilute or emulsify the oil, impair lubrication, accelerate wear, and damage the engine. 3. Performing regular daily inspections and maintenance, as well as scheduled check-ups, plays a crucial role in preventing oil level increase.

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Can a temporary ID card be used for the fourth subject of the driving test?

Temporary ID cards can be used for the fourth subject of the driving test because they hold the same legal validity as a regular ID card. The specific details are as follows: 1. You can go to any police station (even non-local ones), submit your household registration booklet, a recent one-inch black-and-white photo without a hat (the photo size standard is the same as for a regular ID card), and pay a fee of 10 RMB for the document. Students can obtain the temporary ID card on the same day of application. 2. In some places, providing the ID card number or having a household registration booklet or residence permit may suffice for the test. However, specific details should be confirmed with the local vehicle management office, as not all places allow this.

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What does the A next to the electronic handbrake mean?

It refers to the Auto-Hold system, a technological application that enables automatic parking brake functionality while the vehicle is in operation. This technology allows drivers to avoid prolonged braking when the vehicle comes to a stop, and prevents unnecessary rolling when the automatic electronic parking brake is engaged. Relevant details are as follows: 1. The Auto-Hold system's functionality is not simply achieved by using the electronic parking brake. When stopping on slopes or at traffic lights, drivers typically use the handbrake for parking. Relying solely on the electronic parking brake in such scenarios would result in slower response times. 2. Manually operating a handbrake takes no more than 0.3 seconds, and human control offers more flexibility than electronic control. Engaging the electronic parking brake requires a preliminary brake pedal action and button response time (to prevent accidental activation), with the motor operation itself taking about 0.5 seconds. Even when the electronic parking brake automatically releases during throttle application, the action can feel somewhat abrupt. Therefore, the Auto-Hold system operates on a different principle.

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How often should a car undergo major maintenance?

Major maintenance is generally performed every 20,000-30,000 kilometers or every 2 years. Typically, changing the engine oil and oil filter is a mandatory item for each maintenance service. Under the harsh conditions of high temperature and high pressure inside the engine, the shelf life of engine oil is significantly shortened, and its performance deteriorates substantially. Over time, it fails to protect the engine effectively. The oil filter is designed to prevent impurities from mixing with the oil, which can cause oxidation and produce sludge that clogs the oil passages. Relevant details are as follows: 1. The air filter's function is to block dust and particles inhaled during the engine's intake process. If the filter is not cleaned for a long time, dust can enter the engine, causing abnormal wear on the cylinder walls. The air filter must also be replaced during major maintenance. 2. The cabin air filter operates similarly to the air filter, filtering out impurities and large amounts of dust before delivering clean air into the vehicle. Generally, the cabin air filter is also replaced during major maintenance, though it might be replaced during minor maintenance as well. The key point is that cabin air filters are not expensive, and replacing them is not difficult, so car owners can consider replacing them themselves.

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Can I renew my driver's license through 12123?

Why Does the Car's Water Temperature Gauge Not Rise in Winter?

How to Check for Brake Drag?

Why Does Engine Oil Level Increase in Cars?

Can a temporary ID card be used for the fourth subject of the driving test?

What does the A next to the electronic handbrake mean?

How often should a car undergo major maintenance?

How to Retrieve a Driver's License After a Six-Month Suspension?

What Are the Causes of High Engine Coolant Temperature?

Where to Check a Vehicle's Emission Standards?

Why does the right reverse parking in Subject 2 result in the car touching the line?